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DL63

Sensibly equivalent to:
6R7G CV2912 DH147 OM4
    
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The DL63 double diode triode by Osram would have been designed for receiver applications. Traditionally such a valve would provide signal and AGC rectification, followed by the first audio amplification.
The classic envelope is 37 mm in diameter and, excluding the IO base pins, is 95 mm tall.
References: 1040 & 1043. Type DL63 was first introduced in 1939.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a
a(d2)
a(d1)
-
h
k
g1

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
ra
gm
6.3
0.3
250
-3
22,500
1.6
Updated April 25, 2013.
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